Kinetics of Bose-Einstein condensation in a trap

被引:123
作者
Gardiner, CW
Zoller, P
Ballagh, RJ
Davis, MJ
机构
[1] UNIV INNSBRUCK, INST THEORET PHYS, A-6020 INNSBRUCK, AUSTRIA
[2] UNIV OTAGO, DEPT PHYS, DUNEDIN, NEW ZEALAND
关键词
D O I
10.1103/PhysRevLett.79.1793
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The formation process of a Bose-Einstein condensate in a trap is described using a master equation based on quantum kinetic theory, which can be well approximated by a description using only the condensate mode in interaction with a thermalized bath of noncondensate atoms. A rate equation of the form (n) over dot = 2W(+)(n)[(1 - e({mu n - mu}/kT))n + 1] is derived, in which the difference between the condensate chemical potential mu(n) and the bath chemical potential mu gives the essential behavior. Solutions of this equation give a characteristic latency period for condensate formation and appear to be consistent with the observed behavior of both rubidium and sodium condensate formation.
引用
收藏
页码:1793 / 1796
页数:4
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